Originally written at Westcott near Aylesbury, July 1950.
Rocket development with liquid propellants : from the early days with Max Valier to the A4 (V2) long-range rocket (1930-1942) by W. H. J. Riedel. ISBN 1872922325. Published by Rolls-Royce Heritage Trust in 2005. Publication and catalogue information, links to buy online and reader comments.